<!doctype html>
<html ng-app>
    <head>
        <script src="http://code.angularjs.org/angular-1.0.1.min.js"></script>
        <style type="text/css">
div{
	width: 600px;
	height: 60px;
	background-color: pink;
	margin-top: 6px;
}
        </style>
    </head>
    <body>
        Your name: <input type="text" ng-model="yourname" placeholder="sadf">
        <hr>
        Hello {{yourname || 'World'}}!

      
       


    </body>

</html>